How to highlight code on forums with yellow background?
With the code HTML tag. Here are all available tags:
https://trisquel.info/en/filter/tips
Error: cannot open display: :0
Strange. I would try to execute:
$ pkexec --user webbrowser env DISPLAY=:1 XAUTHORITY=$XAUTHORITY abrowser
On my Trisquel 8 system, where $DISPLAY is :0, as on yours, what I wrote in
my previous post works (although I tested with the user who is logged in, the
only regular user on my system) and setting DISPLAY=:1 (as in the command
right above) gives the error you report. Do you use Trisquel 8 or 9?